摘要
利用高温热聚合法制备了石墨相氮化碳(g-C_(3)N_(4)),采用传统水热法合成了钨酸铋(Bi_(2)WO_(6)),通过超声分散和微波辅助水热法快速制备了g-C_(3)N_(4)-Bi_(2)WO_(6)复合物光催化剂并将其用于光催化降解亚甲基蓝染料。此外,还考察了g-C_(3)N_(4)和Bi_(2)WO_(6)的摩尔比例、反应溶液的pH、微波反应时间、光催化剂的循环使用次数对g-C_(3)N_(4)-Bi_(2)WO_(6)复合物光催化剂活性的影响。研究结果显示,制备的S型g-C_(3)N_(4)-Bi_(2)WO_(6)异质结光催化剂具有高的光催化活性和稳定性,它可以作为一种高效的光催化剂用于染料废水中亚甲基蓝的降解。
In this study,graphitic carbon nitride(g-C_(3)N_(4))was prepared via direct calcination of melamine powder in air,while bismuth tungstate(Bi_(2)WO_(6))was synthesized using the conventional hydrothermal method.Furthermore,a g-C_(3)N_(4)-Bi_(2)WO_(6)composite photocatalyst was rapidly fabricated via ultrasonic dispersion combined with a microwave-assisted hydrothermal method,and this composite was employed for the photocatalytic degradation of methylene blue(MB)dye.Additionally,the effects of the g-C_(3)N_(4)-Bi_(2)WO_(6)molar ratio,reaction solution pH,microwave reaction time,and photocatalyst recycling cycles on the photocatalytic activity of the composite were systematically investigated.Results indicated that the as-prepared S-type g-C_(3)N_(4)-Bi_(2)WO_(6)heterojunction photocatalyst exhibited excellent photocatalytic activity and stability,demonstrating potential as an efficient photocatalyst for MB degradation in dye-contaminated wastewater.
作者
赵丽敏
张宝峰
靳瑞发
王丽敏
ZHAO Limin;ZHANG Baofeng;JIN Ruifa;WANG Limin(Department of Chemistry and Life Sciences,Chifeng University;No.2 Experimental Middle School of Chifeng:Chifeng 024000,China)
出处
《水处理技术》
北大核心
2026年第3期93-100,共8页
Technology of Water Treatment
基金
内蒙古自治区自然科学基金项目(2023LHMS02010)。
